Delhi - DL

What we found in Delhi

All 35findings, with sources →
Heritage
8th-11th
century CE (Tomara dynasty)
India's oldest surviving gravity dam is in the Delhi ridge
Water bodies
226 → ~7
sq km (Najafgarh Jheel, 1880s → today)
Delhi's largest lake shrank 97%
Yamuna
~80%
of the Yamuna's pollution load, in the 2% of its length inside Delhi
22 km of river carries ~80% of its pollution
Sewage
75%
of STPs without chlorination/UV/ozonation (DJB's own NGT filing)
75% of Delhi's STPs lack disinfection equipment
Governance & finance
51-53%
Non-Revenue Water; Rs 4,988 crore revenue impact (FY18-22)
Half of Delhi's water earns no revenue
Equity
17x
gap in per-capita daily water availability across the city
509 litres in Central Delhi, 29 in Mehrauli

Reservoir Status

Yamuna at Wazirabad

—

No public daily gauge for the Wazirabad pond. Levels surface only in crisis reporting and Supreme Court filings.

Munak Canal (CLC)

—

No public daily flow for the 102-km Munak carrier - the single largest input to Delhi's supply. Carriage figures appear only when a shortfall reaches court (June 2024).

Upper Ganga Canal

—

No public daily release on the Upper Ganga Canal leg; the channel also closes for UP's annual canal maintenance with no Delhi-visible schedule.

Bhakra (BBMB share)

Storage not published for this share
In: 50,741Out: 25,588

Tehri (Delhi share)

—

THDC publishes Tehri's 300-cusec allocation to Delhi but no daily release against it; the CWC weekly bulletin that carried Tehri storage stopped in May 2025.

DJB tube-wells & Ranney wells

—

No public tube-well register exists - the CAG's audit records its absence as a finding.

Search latest Delhi water news→|Via Google News

Groundwater

CGWB block exploitation, ward risk composite, CGWB Year Book station overlay.

Water bodies

OSM polygons.

About this dashboard

Methodology, data sources, water sources tracked, and the data gaps we're honest about.

Methodology: Reservoir levels for Delhi from DJB. Daily consumption assumptions (~4365 MLD demand) are starting points; the sliders above let you substitute your own. See theAbout pagefor the full data-source index and methodology.